期刊
ADVANCED FUNCTIONAL MATERIALS
卷 25, 期 21, 页码 3203-3209出版社
WILEY-V C H VERLAG GMBH
DOI: 10.1002/adfm.201500856
关键词
energy harvesting; copolymers; piezoelectric nanogenerators; pressure sensors; surface modifications
类别
资金
- Basic Science Research Program through National Research Foundation (NRF) of Korea - Ministry of Science, ICT and Future Planning [2012R1A2A1A01002787, 2009-0083540]
- Center for Advanced Soft-Electronics as Global Frontier Project through National Research Foundation (NRF) of Korea - Ministry of Science, ICT and Future Planning [2013M3A6A5073177]
- National Research Foundation of Korea [2013M3A6A5073177, 2012R1A2A1A01002787] Funding Source: Korea Institute of Science & Technology Information (KISTI), National Science & Technology Information Service (NTIS)
Here micropatterned poly(vinylidenefluoride-co-trifluoroethylene) (P(VDF-TrFE)) films-based piezoelectric nanogenerators (PNGs) with high power-generating performance for highly sensitive self-powered pressure sensors are demonstrated. The microstructured P(VDF-TrFE)-based PNGs reveal nearly five times larger power output compared to a flat film-based PNG. The micropatterning of P(VDF-TrFE) polymer makes itself ultrasensitive in response to mechanical deformation. The application is demonstrated successfully as self-powered pressure sensors in which mechanical energy comes from water droplet and wind. The mechanism of the high performance is intensively discussed and illustrated in terms of strain developed in the flat and micropatterned P(VDF-TrFE) films. The impact derived from the patterning on the output performance is studied in term of effective pressure using COMSOL multiphysics software.
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